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Home Material GB /T 21652-2017
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Grade QSn4-3
China ISC T50800
Corresponding Standard GB /T 21652-2017
Copper and Copper Alloy Wire
Classification Copper and Copper Alloys
Properties High Hardness High Elasticity Corrosion Resistance
QSn4-3 Chemical Element Composition Content (%)
Component Fe P Pb Al Zn Sn Other Total More
Minimum Value - - - - 2.7 3.5 - Cu:余量
Maximum Value 0.05 0.03 0.02 0.002 3.3 4.5 0.2
"Other individual elements or other totals": The chemical composition includes elements not specified in the table. Analysis should only be conducted if these elements are suspected to be present, or if routine analysis suggests that their content may exceed the prescribed limits.
QSn4-3 Mechanical Properties
Heat Treatment or Condition
Tensile Strength
σb
Mpa 		Elongation or Extension Rate
δ
%
0.1~1.0 软(O60) ≥350 A100mm
≥35
＞1.0~8.5 软(O60) ≥350 A100mm
≥45
0.1~1.0 1/4硬(H01) 460~580 A100mm
≥5
＞1.0~2.0 1/4硬(H01) 420~540 A100mm
≥10
＞2.0~4.0 1/4硬(H01) 400~520 A100mm
≥20
＞4.0~6.0 1/4硬(H01) 380~480 A100mm
≥25
＞6.0~8.5 1/4硬(H01) 360~450 A100mm
≥25
0.1~1.0 1/2硬(H02) 500~700 /
＞1.0~2.0 1/2硬(H02) 480~680 /
＞2.0~4.0 1/2硬(H02) 450~650 /
＞4.0~6.0 1/2硬(H02) 430~630 /
＞6.0~8.5 1/2硬(H02) 410~610 /
0.1~1.0 3/4硬(H03) 620~820 /
＞1.0~2.0 3/4硬(H03) 600~800 /
＞2.0~4.0 3/4硬(H03) 560~760 /
＞4.0~6.0 3/4硬(H03) 540~740 /
＞6.0~8.5 3/4硬(H03) 520~720 /
0.1~1.0 硬(H04) 880~1130 /
＞1.0~2.0 硬(H04) 860~1060 /
＞2.0~4.0 硬(H04) 830~1030 /
＞4.0~6.0 硬(H04) 780~980 /
Approximate Comparison Table Bronze
China Japan United States International Organization for Standardization France Russia
GB ISC JIS ASTM UNS ISO NF EN/NF GOST
QSn4-3 T50800 C5131
C51300 		90.5Cu-4.3Zn-5.15Sn C51300 CuSn4Zn4 CuSn4Zn4
C51300 		БрОЦ4-3
QSn4-3 Corresponding Standards(Same grade name, different standards)
1 GB /T 5231-2012
QSn4-3 T50800
2 GB /T 5231-2022
QSn4-3 T50800
3 YS /T 649-2018
QSn4-3 T50800
4 GB /T 3114-1994
QSn4-3 T50800
5 GB /T 3114-2023
QSn4-3 T50800
6 GB /T 21652-2017
QSn4-3 T50800

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